hi meanderthal, a special albuquerque hello
i remember the progression of the EH effects from the 70s
at first they followed the dan armstrong example, effects you could plug into your guitar. i also recall that they were available with the male plug on either the amp or guitar side, can anyone else confirm this?
popular feedback from the dealers (guessing, educated guess) caused EH to switch to double female jacks by the early to mid 70s. the picture shown is 2nd generation graphics,
i had an LPB1 in the late 70s but it was a very early model with the first generation graphics, simple block letters. had the male input plug.
the circuit was the famous 'flying lead 'style, it was a mess inside.
but it drove my 68 twin into overdrive which i needed at the time.

Speaking of messes - I've got what looks to be a 2nd gen muff fuzz that has seen better days; a friend gave it to me hoping I could repair it. I don't have any electronics background but I've built a couple of pedals and am enjoying learning about this hobby as I go. I've tried to get a schematic that matches up to this pedal, but the only one I could find for the opamp muff fuzz was at g.g.g. and indicated incorrect capacitor values. I tried to trace out the circuit but it never seemed right to me. The jacks are gone, as is almost all of the hookup wire. It seems clear upon looking at alteredsounds *very* enlightening photos that somebody went wild with the iron on this thing - there are scorched marks and traces melted together. Also, there are only two capacitors, both of which have a broken lead. Anyway, I took a series of photos, including the component side that might prove interesting. I've enjoyed lurking around here and learning from the members, so perhaps this will be helpful to you all.
John
http://s237.photobucket.com/albums/ff31 ... ff%20Fuzz/

Very nice, this forum is great Analog - thanks for that; even with my imprecise skills I should be able to make some sense of this circuit now...
Altered - thanks for the help! I've looked around for just such pictures but never found them until I started hanging out here. Ironically, I looked for info on the opamp muff fuzz when I first signed on to this board and found nothing. A couple of days ago I photographed my mangled muff, looking to appeal to the board's members for assistance, and I found your thread while performing a courtesy search on related topics immediately prior to posting. What perfect timing! Either way - right on the real, death to the fakers - freestomps(and specifically the people that hang out here i.e.altered and a.g.) has been a tremendous source of knowledge for me.
thanks
John